2022 Northern Garden Collection Reference Guide

Page 24

TOP-GRAFTS & TREE-FORMS Caragana GLOBE CARAGANA TOPGRAFT

Caragana frutex 'Globosa'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Globe EXPOSURE / HARDINESS:  Zone 2

5’ x 3’ (1.5 x 0.9 m) Yellow

Drought and heat tolerant species. Compact globe-shaped habit. Bright-green foliage, small yellow flowers in late spring.

WEEPING CARAGANA TOPGRAFT

Caragana arborescens 'Pendula'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Weeping EXPOSURE / HARDINESS:  Zone 2

5’ x 3’ (1.5 x 0.9 m) Yellow

Drought and heat tolerant species. The arching, weeping branches of this regular-leafed Caragana make an ideal accent plant. Small yellow flowers in late spring.

Walker Caragana Topgraft

WALKER CARAGANA TOPGRAFT

Caragana arborescens 'Walker'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Weeping EXPOSURE / HARDINESS:  Zone 2

5’ x 3’ (1.5 x 0.9 m) Yellow

Drought and heat tolerant species. Fine textured, light green foliage makes this plant look very graceful and elegant. Small yellow flowers in late spring.

Hydrangea LIMELIGHT® HYDRANGEA TREEFORM

Hydrangea paniculata 'Limelight'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Spreading, rounded EXPOSURE / HARDINESS:  Zone 3b

6’ x 3’ (2 x 0.9 m) White (panicle)

Upright rounded shrub with outstanding lime-green flowers in early August. Prefers a sheltered location in zone 3.

QUICKFIRE® HYDRANGEA TREEFORM

Hydrangea paniculata 'Bulk'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Spreading, rounded EXPOSURE / HARDINESS:  Zone 3b

5’ x 3’ (1.5 x 0.9 m) Pink (panicle)

Well named for its white blooms in mid-July (up to a month earlier than other cultivars) that rapidly turn a deep and lasting pink. Prefers a sheltered location in zone 3.

Summer Wine® Ninebark Treeform

VANILLA STRAWBERRY® HYDRANGEA TREE

Hydrangea paniculata 'Renhy'

MATURE SIZE: FLOWERS:

CROWN SHAPE: Spreading, rounded EXPOSURE / HARDINESS:  Zone 3b

5’ x 3’ (1.5 x 0.9 m) Pink (panicle)

Enormous flower panicles are a blend of vanilla and strawberry in early August. The red colour in these flowers persists for 3-4 weeks. Bailey Nurseries First Editions introduction. Prefers a sheltered location in zone 3.

Physocarpus - Ninebark ®

FE AMBER JUBILEE NINEBARK TREEFORM

Physocarpus opulifolius 'Jefam'

MATURE SIZE: FOLIAGE:

6’ x 4’ (2 x 1.2 m) Orange-green

CROWN SHAPE: Spreading, rounded EXPOSURE / HARDINESS:  Zone 2

Foliage emerges orange, turns green during summer, than purple in fall. Outstanding peeling bark on exposed trunk. Basal pruning will be required to maintain single stem. CPBR #4765, USPP #23,177

Limelight Hydrangea Treeform

SUMMER WINE® NINEBARK TREEFORM

Physocarpus opulifolius 'Seward'

MATURE SIZE: FOLIAGE:

CROWN SHAPE: Spreading, rounded EXPOSURE / HARDINESS:  Zone 2

6’ x 4’ (2 x 1.2 m) Purple

A tree-formed version of this popular purple leafed ninebark. Creamy white flowers in the spring. Outstanding peeling bark on exposed trunk. Basal pruning will be required to maintain single stem. USPP #11,211

Picea - Spruce GLOBE BLUE SPRUCE TOPGRAFT

Picea pungens 'Globosa'

MATURE SIZE: FOLIAGE:

CROWN SHAPE: Globe EXPOSURE / HARDINESS: 

5’ x 3’ (1.5 x 0.9 m) Blue needles

Zone 2

Topgraft has bright blue evergreen foliage and globe-shaped habit. Does not produce cones.

Globe Blue Spruce Topgraft

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